22 lines
444 B
Rust
22 lines
444 B
Rust
//@ edition:2015..2021
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// Creating a stack closure which references a box and then
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// transferring ownership of the box before invoking the stack
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// closure results in a crash.
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fn twice(x: Box<usize>) -> usize {
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*x * 2
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}
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fn invoke<F>(f: F) where F: FnOnce() -> usize {
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f();
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}
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fn main() {
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let x : Box<usize> = Box::new(9);
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let sq = || { *x * *x };
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twice(x); //~ ERROR: cannot move out of
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invoke(sq);
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}
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